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Selection method capable of simultaneously improving feed efficiency and increasing growth speed of pigs

A technology of growth rate and pig feed, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of prolonging the slaughtering age, reducing pig feed intake and growth speed, etc., and achieve good selection effect

Inactive Publication Date: 2019-12-31
JILIN UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The feed efficiency of pigs can be effectively improved by reducing the RFI of pigs, but the disadvantage of RFI is that choosing RFI alone will reduce the feed intake and growth rate of pigs, and the feed efficiency will be improved, but the age at slaughter will be prolonged

Method used

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  • Selection method capable of simultaneously improving feed efficiency and increasing growth speed of pigs
  • Selection method capable of simultaneously improving feed efficiency and increasing growth speed of pigs
  • Selection method capable of simultaneously improving feed efficiency and increasing growth speed of pigs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] 60 young boars were randomly selected from the Junmu No. 1 group of the original breeding pig farm of Jilin University, and divided into 2 batches (with limited testing equipment), 30 piglets in each batch, and were rotated in the limited pen for measurement every 2 weeks. The measurement starts at about 90 days old from the young boar. During the measurement, the weekly feed intake and weight gain of each boar are recorded, and the measurement ends when the body weight reaches about 110 kg. At the end of the measurement, pigs supplied by SFK in Denmark are used. Carcass lean meat percentage ultrasonic measuring instrument piglog105 was used to measure backfat thickness. Among them, 3 boars were eliminated due to health reasons during the test period. Feed the corn-soybean meal type diet, the dietary digestible energy (DE) 13.6MJ / Kg, crude protein (CP) 16.6%. Mathematical model of pig average daily gain (ADG): ADG=Group+Pen+Litter+b1*( ADFI) + b2*(BF)+ EBV EWG + e. T...

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Abstract

The invention relates to a selection method capable of simultaneously improving feed efficiency and increasing growth speed of pigs. The selection method is characterized in that the selection methodfor simultaneously improving the feed efficiency and increasing growth speed of pigs by utilizing over-growth body weight traits comprises the steps of selection of basic conditions, determination ofindexes and data processing, breeding value estimation, comprehensive selection index calculation, and reserve breeding pig selection, matching and verification. The selection method is simple and practical, is good in selection effect, can be used for phenotypic selection of simultaneous determination groups, can be used for comparing and selecting different determination groups according to heritability and genetic correlation, and can be used for directly selectively improving the feed efficiency and increasing the growth speed of pig groups.

Description

technical field [0001] The invention relates to a selection method capable of simultaneously improving feed efficiency and growth speed of pigs, and belongs to the field of genetic breeding of pigs. Background technique [0002] Today, when the energy crisis is getting more and more serious, the feed efficiency of pigs has always been a matter of special concern to the breeding industry and pig farming enterprises. The traditional method of evaluating the feed efficiency of pigs is to use the feed conversion ratio (FCR), that is, the feed / gain ratio (Feed / Gain) or the meat-to-feed ratio (Gain / Feed). There are also defects in breeding selection. Residual Feed Intake (RFI) is also a trait that evaluates an animal's feed efficiency and is the difference between an animal's actual feed intake and the estimated feed intake required for growth and maintenance. The feed efficiency of pigs can be effectively improved by reducing the RFI of pigs, but the disadvantage of RFI is that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02G06F17/50
CPCA01K67/02
Inventor 孙博兴白春艳王大力梁爽王秀娜高安崇
Owner JILIN UNIV
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